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Registered
Join Date: Dec 2006
Location: Germany
Posts: 404
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valve adjustemt-remove header?
Hello,
a buddy has his 930 at Porsche for big service. They told him, its necessary to remove headers or at least parts from the exhaust for valve adjustemt. Can't check this on my 930 because I have sport headers/ he has original headers. Is it really necessary to touch the exhaust for valve adjustment/ valve cover clearance? Thanks Falk
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87 930 bblk/blk 88 3.6 white/blk |
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10-06-2014, 03:39 AM
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Ingenieur
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WTF?! Not at all necessary. I would stop work there and go someplace else.
OK we helped you, now you help us. Who is this place, and where? |
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10-06-2014, 03:51 AM
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Registered
Join Date: Apr 2008
Location: Houston, TX
Posts: 404
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With aftermarket headers, it may happen.
I have the issue with my "European headers" on my race car, on the passenger side only. I don't have to remove it though, just loosen the head bolts then it gives me enough room to remove the valve cover. -Guillaume |
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10-06-2014, 04:57 AM
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Join Date: Dec 2006
Location: Germany
Posts: 404
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As said, buddy has original headers, should be no problem to remove the valve cover.
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10-06-2014, 05:22 AM
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Ingenieur
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That's the facts. You can just squeek the lowers off by the air injection check valves. You do have to remove the diverter valves and hoses. Maybe they consider them exhaust parts.
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10-06-2014, 06:12 AM
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Join Date: Dec 2006
Location: Germany
Posts: 404
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...air injection was removed time ago, no problems with that stuff.
thanks Falk |
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10-06-2014, 06:58 AM
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Registered
Join Date: Dec 2002
Location: Long Beach, CA
Posts: 1,262
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Think you'll have to remove the wastegate. It's a quick operation, and the gasket for it is included in the factory valve adjustment gasket kit.
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10-06-2014, 11:14 AM
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Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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waste gate has to come off as said. 4 bolts and the hose that goes to it.
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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10-07-2014, 08:49 AM
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Ingenieur
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Hmmm ... Is there a model difference here that I don't know about? I am doing an '88 right now and I was able to slide the lower past the WG without too much difficulty.
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10-07-2014, 09:17 AM
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Join Date: Dec 2002
Location: Long Beach, CA
Posts: 1,262
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No model difference. The extra step makes the valve adjusment at least as much easier as it is difficult to get the wastegate off, IMHO.
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10-07-2014, 09:23 AM
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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I always leave the wastegate on during valve adjustments and just work around it. The motor has B&B headers so maybe that makes it easier.
Half of the right side lower valve cover webbing has been machined down a little to make more clearance for the wastegate. Not sure if all of them are like that, just certain years, or of it was done by someone before I got the car. |
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10-07-2014, 11:51 AM
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Join Date: Oct 2006
Location: Mt Pleasant, SC
Posts: 1,167
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You should not have to remove anything, I never have. The valve cover on the wastegate side has fins that are cut down to allow the VC to be removed, I filed mine down a bit more to make it even easier. Sorry, I have not read thru this thread so if this is redundant info sorry....
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Tim 1986 930 Gone:71,2,4 914's, 70T, 71T(RS),77S |
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10-07-2014, 05:52 PM
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